A detailed administrative report from Charles Lutwidge (Receiver General for the Isle of Man) to the Lords of the Treasury, responding to an order of 18 May 1764 to investigate smuggling between the Isle of Man and Great Britain. The report catalogues goods smuggled (tea, brandy, wine, tobacco, silks), quantifies the Duke of Atholl's revenue (£7,500 p.a., with £6,500 from smuggling duties), identifies four major smuggling ports, estimates national revenue loss at £200,000 p.a., and describes smuggling techniques including fraudulent coastal clearances and drawback abuse.